Dasypeltis scabra is one of the best studied species of egg-eating snakes. Which of its following characteristics would strongly suggest that it has a built-in egg-cracker?
a. pushing the egg against the rim of the bird's nest
b. pushing the egg against ventral hypophyses
c. pushing the egg out of the mouth
d. pushing the egg against a ribbed trachea
Ans: b. pushing the egg against ventral hypophyses
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A cellular structure found in plant but not animal cells is the:a
chloroplast. b. ribosome. c. endoplasmic reticulum. d. microtubule. e. microfilament.
These two secondary lesions arise when bleeding or burst capillaries occur in the skin
A) crust and scale B) papular and maculopapular rashes C) petechiae and purpura D) bullae and vesicles E) cysts and ulcers
Generally, heavy metals, except silver, have been proven to be too toxic for use on human tissue and are no longer used medically
Indicate whether this statement is true or false.
In a population of 100 four-o'clock flowers there are 40 red-flowered plants (CRCR), 38 pink-flowered plants (CRCW), and 22 white-flowered plants (CWCW). What is the frequency of the CW allele in this population?
A. 0.32 or 32% B. 0.6 or 60% C. 0.41 or 41% D. 0.09 or 9% E. 0.52 or 52%